Ad blockers are one of the best ways to help secure your privacy online, reduce clutter on websites, and avoid spyware-infected ads. Although it’s certainly possible to find a paid ad blocking software, there’s no reason to spend money on one. Most of the best ad blockers are completely free to use. This list of the best free ad blockers includes a mixture of highly-effective tools for Chrome, Firefox, and more.
The best free ad blockers of 2019
From our research, the best free adblockers of 2019 are:
- Stands Fair Adblocker
- Opera Browser
- AdBlock Plus
- uBlock Plus Adblocker
- Poper Blocker
- Trustnav Adblocker
- Adblocker Ultimate
- AdGuard (no longer always free)
Ad blockers are the obvious solution to removing unwanted ads on the web. Paid ad blockers are typically the best option if you want something that works the best, but many free ad blockers might just get the job done for you.
Below, you’ll find our detailed overview of the best free ad blockers available. No ad blocker is perfect, however, so you’ll find you may need to try out multiple options to find the right fit.
Note: If all you’re looking to do is get rid of annoying pop-up advertisements, check out our guide on the best popup ad blockers.
Types of ads and ranking methods
Not only are there multiple types of advertisements you might run into, there are multiple ways to block advertisements. Ultimately, how an ad-blocker goes about blocking ads does not matter so much as long as it doesn’t impede your ability to effectively browse the web and doesn’t invade your privacy. Additionally, a good ad blocker will block most types of ads.
When researching the best free ad blockers, we looked for the following criteria
- Always free, without a paywall for important features
- Good user ratings
- Do not require an account to use services
- Recently updated (within the past 12 months)
- Readily available as a plugin for at least one browser or operating system
- Blocks “display ads” (floating, pop-up, banner, video, static image, wallpaper, text ads)
- Blocks streaming video ads (such as on YouTube)
We initially also tested for prestitial and interstitial ads (those that load a screen before your content and often include a countdown). However, since Google launched its built-in ad blocker to Chrome and began punishing sites in Google searches for unfavorable ad practices, most reputable sites have reduced or eliminated this style of advertisement, making them difficult to find for effective testing. We only mention these where available, but did not include them in rating considerations.
Particularly, our test used a few select sites with various ad types to test. Those included Forbes.com, Fark.com, YouTube, and OrlandoSentinel.com. In the case of Orlando Sentinel, we found that that website utilizes fairly aggressive advertisements that most ad blockers struggle to block. In fact, only a few ad blockers on our list effectively blocked all ads on Orlando Sentinel.
The free ad blockers listed below did not need to meet all of the criteria to make the list, but as many as possible. We scored each free ad blocker based on those criteria and assigned a score based on effectiveness. Additionally, with the exception of the Stands Fair Adblocker, all of the adblockers listed below are open source software.
Best Ad Blockers- Browser plugins and apps
Your best ad blocking option is to install a browser plugin or utilize a web browser that already has a built-in blocker. Browser plugins or built-in ad blockers can interact with the websites you’re using much more accurately than a standalone program operating on your computer in the background.
This Chrome-only ad blocker is a low-impact plugin that does exactly what it’s intended to do. You can block all types of ads using this plugin, with the most obvious limitation being that it’s only available as a Chrome addon. The Stands Fair AdBlocker is not designed for wholesale ad blocking, although you can use it for that. The company believes in fair advertising and encourages users to whitelist certain ads from different sites.
Thankfully, Stands lives up to its promise of blocking ads. That included the more aggressive advertisements found on Orlando Sentinel, as well as other display ads, autoplay video ads, and ads on YouTube.
Best features: Block ads on Facebook and search ads on Google.
Works with: Chrome
If you’re looking for an all-inclusive ad blocking experience without the hassle of plugins, the Opera browser is an excellent source. Opera is one of the fastest and most well-built browsers around and was among the first web browsers to have a built-in ad blocker.
Opera’s ad blocker also works well. After turning it on in the settings, you’ll find it blocks almost every ad you come across. The only exception I found was that it failed to block the interstitial ads common on Forbes (the quote ad that often pops up before reading an article). Most of the other ad blockers we tested did block that ad from Forbes. That said, Opera blocks every other ad type that we tested, including those on Orlando Sentinel.
Best feature: Built into web browser, easy whitelisting
Works with: Chrome
AdLock is the newest entry on our list, but its effectiveness rocketed it right to the top of our recommended options. Far from being just a browser plugin, AdLock also offers Windows and Android tools that help block ads across your apps. It even has a parental tool in the works that we’ll be interested to test out once available. As a free browser plugin on Chrome, we found AdLock to be an extremely powerful and aggressive tool in all the right ways.
AdLock is designed to get rid of all forms of ads, and with but one exception, cleared away all of the ads that we tested across a variety of sites. The only website that managed force through AdLock’s filter was on the Orlando Sentinel website. We found that that site tripped up almost every other ad blocking tool on our list, as well, so it wasn’t a huge knock against AdLock’s service. In this case, AdLock blocked every other ad on the pages we tested, including ads on YouTube, autoplay video ads, and pop-up ads, to name a few.
By default, the tool is designed to block every possible type of ad you might encounter. You can easily whitelist a site by clicking on “Settings” and then “Whitelist”. You’ll also be able to toggle a few additional filter settings in there if you so choose. Chances are, though, that you’ll likely want to leave those alone.
AdLock is one to watch and earns high marks based on our criteria. Its paid tools might be worth considering, but with no free trial to test them out, we recommend sticking with the free options for Chrome, Windows and Android Chrome for now.
Best features: Spyware filter
Works with: Chrome (free), Windows (free and paid), Android (free and paid)
With over 10 million downloads on the Chrome browser alone, Adblock Plus is the most popular ad blocking software around. A free and open source project from the eye/o. Adblock Plus is the primary source code for a lot of other free ad blockers around here.
By default, Adblock Plus is not designed to block all ads, only those deemed intrusive or potentially malware. That means you’ll still run into some ads unless you fiddle with the settings. If you want to block out all ads (including autoplay video ads), you’ll need to go into options and de-select “Allow some non-intrusive advertising” at the bottom of the screen. Even then, ABP isn’t perfect. It blocked most of the ads I found but was among the many ad blockers that couldn’t seem to deal with any of the ads on Orlando Sentinel. Unfortunately, even ABP’s “block element” feature failed to work on those as well. ABP is good and popular, but far from a perfect solution.
Best features: Includes anti-adblock filter
Works with: Chrome, Firefox, Microsoft Edge, Internet Explorer, Opera, Safari, Yandex Browser, iOS, Android
The biggest drawback to this plugin is that it’s less user-friendly in the forward-facing interface. There are a few setting toggles in the UI, but most of the grunt work needs to be done in the actual settings. That said, uBlock Plus Adblocker effectively stopped all of the ads we tested, including autoplay videos.
Even with most of the settings sitting behind the settings menu, there’s a lot you can do with this blocker. Perhaps one of the biggest draws for uBlock Plus Adblocker is the inclusion of a large library of third-party filters. The plugin also has advanced user settings that allow you to create your own content filters, among other things.
uBlock Plus Adblocker takes care of most ads, but it did struggle with the Orlando Sentinel banner ads that tripped up most every other ad blocker we tested.
Best features: Large element filtering and malvertising filters
Works with: Chrome
A new addition to the pop-up blocking scene, Poper Blocker is available for both Chrome and Firefox web browsers. This plugin has been hailed as the best pop-up blocker on the market by several other tech sites, which is a fair claim, although not necessarily the case from our testing. Poper Blocker is a high-tier option to explore nonetheless as it’s very effective at what it does.
Both the Chrome and Firefox versions of this plugin work well to block not just pop-ups, but website overlays that are exceedingly common as well. This plugin allows you to right-click overlays to remove them, while other types of pop-ups are removed automatically. And, as with other blockers, whitelisting is available, as is the option to report when a pop-up fails to get blocked by the plugin.
Poper Blocker hits most of the criteria we look for in a blocker. It’s completely free to use and doesn’t lock any of its features behind a paywall. There’s no sign-up required, so you don’t have to give over personal information to use it, either. The only thing you may be concerned about is the fact that Poper Blocker collects and uses data anonymized — but you can opt-out of data collection services for even more privacy.
Over 2 million users on Chrome alone have tried Poper Blocker, while over 73,000 of those users joined together to give the plugin a rather hight 4.8 out of 5 stars. The company behind Poper Blocker appears to update the app rather frequently. As of this time of writing, it was last updated in October 2019 (and likely more recently, depending on when you’re reading this article.)
As for the success of its blocking, our own experience was positive, but mixed. Some pop-ups were successfully blocked every time after using the “remove overlay” option. However, we found this did not always block the same pop-ups on some sites. For example, an overlay on Forbes.com returned after refreshing the page. And blocking the overlay made the Forbes front page inoperable. That failure helped lower the score for this option just a bit.
Best feature: Overlay blocking
Works with: Chrome and Firefox
AdBlocker Genesis Plus
If you’ve used or are interested in the uBlock Origin or AdBlock Plus style of ad blockers, this plugin may be for you. AdBlocker Genesis Plus is a fork of other popular plugins, meaning it uses the same basic code which alters enough to be a unique program. The UI is slightly different, but the ad blocking functionality is mostly the same. More notably, this ad blocker’s developer says he specifically removed tracking code from the original uBlock/AdBlock Plus code in order to ensure more privacy.
A good number of people have latched onto this ad blocker as well. It boasts a high rating (4.34 out of 5) and over 100,000 users. Although it uses the same code as some of the more popular options, I found Genesis Plus did not block all on-page ads. It blocked simple display ads on one tested site (Fark.com) but failed to block the large display ad on Orlando Sentinel. That ad can be blocked with the “block element” button, however.
Best features: Removal of tracking code for more privacy, easy whitelisting button, “block element” button
Works with: Chrome
Trustnav is an antivirus company from Andorra that provides a combination adblocker and antivirus Google Chrome plugin. The antivirus solution, which is premium and costs $1.99 per month, is currently unavailable. For now, you can use the solo adblocker plugin for free.
Trustnav also currently has a “Safesearch” Chrome plugin that’s separate from the adblocker. Be sure to install the adblocker version directly from the Chrome.
As far as functionality goes, Trustnav presents a very easy-to-use adblocker with a great user interface. It’s simple and effective at most things. However, the biggest problem you’ll find with this adblocker is that you can’t adjust many settings. Trustnav lets you toggle whether the adblocker is on or off, whether it is blocking all ads or just some ads, and whether you want to get alerts. Beyond that, there’s no fine tuning, no real whitelisting, and no way to view all of your adblocking stats outside of how many ads were blocked on the site you’re visiting at the time.
Positively, it blocks ads like a champion, except for some autoplay video ads. Those seemed to slip right by its filter unabated. Nevertheless, it effectively hits most of the key checkmarks for our ranking system and scores near perfectly on all fronts.
Best feature: Simple interface
Works with: Chrome
Another open source project, AdBlocker Ultimate is good at removing most ads you might come across. In testing, it was able to dispel ads on YouTube and most display ads on various sites we tested. This ad blocker is also widely used and highly rated. It has a 4.84 out of 5 score from Google Chrome users, and over 600,000 installs.
That said, it still struggled with the Orlando Sentinel display ads alongside most of the other ad blockers we tested. It failed to block any of the ads on that site’s page. Nevertheless, for those looking to block most ads, this is a good option. Unfortunately, this plugin hasn’t been updated in just over a year, so its score gets knocked down a bit further.
Best features: Quick “block element” feature to instantly block any ads that get through
Works with: Chrome
The result is that you’ll block most display ads you come across. This included the aggressive Orlando Sentinel ads that most of the other options on our list struggled to block. However, NoScript does not block ads on videos at all, nor does it block most autoplay video ads. This makes it very good at blocking one type of ad, but poor at blocking others.
Best feature: Complete script blocking
Works with: Firefox
To its credit, AdGuard does exactly what you want it to do. You can block all of the types of advertisements that we tested, which is positive. However, the biggest downside to this ad blocker is that it has a premium version. Unfortunately, AdGuard used to offer both a free and paid version, but that’s no longer the case. Instead, you’ll get a 14-day free trial, which then blocks you out of their services afterward.
That aside, the service provides a wide range of options and works well—but you may be disappointed with having to pay later.
Beyond that, users love AdGuard. It has over 4 million downloads on Chrome with a high rating to match, making the free version a worthwhile option. And in our testing, this was one of the only ad blockers that not only effectively blocked the ads on Orlando Sentinel but even blocked the advertisement frames with the word “advertisement” that most others still allowed to load.
Best features: “Inverted whitelisting” (change whitelist to blacklist), block self-promotion ads (sometimes doesn’t work)
Works with: Chrome, Firefox, Safari, Opera, Microsoft Edge, Yandex.Opera
Why are Privacy Badger and Ghostery missing?
You may have heard of the popular ad blockers Privacy Badger and Ghostery. While we like and respect these two ad blockers, neither met our criteria based on how they function. Neither of these plugins is designed to block ads, specifically, but to deny website ads and other website elements that betray user privacy. As a result, both will block some ads some of the time but are primarily focused on privacy instead of complete security online.
That means you won’t get the kind of ad-blocking you might want from either of these plugins. Additionally, they don’t allow you much control over the type of ads they block, given their desire is to allow good ads to pass through and not block all ads wholesale.
Google Chrome Ad Blocker
Despite its bit of scaremongering, Google’s built-in ad blocker does not seem to do much. After putting it through the same tests as the other ad blockers listed above, it allowed every ad through that we could find. The built-in ad blocker is also very limited. Even finding a website where ads were blocked was difficult. And since the Chrome ad blocker is designed to only block certain types of ads, most ads you’ll find are not blocked, especially if they are ads sourced through Google’s own advertising wing.
It almost goes without saying, but Google’s ad blocker is somewhat of a joke. It might have forced some websites to clean up their act a little bit with more intentionally intrusive advertisements, but you really won’t be able to use to block ads.
A note on ad blockers and website revenue
Advertisements come in many flavors, from pop-up ads to on-page advertisements and more. Some websites have even started throwing up a separate page for their ads (such as Forbes) or using autoplay video ads as soon as the page loads.
In general, consumers hate ads for a variety of reasons, including:
- They can slow down page loading
- Many are now intrusive and annoying
- They can use up precious data for those with data-limited internet plans
- The ads are often irrelevant to user interests
- The ads may interrupt the browsing or viewing experience (particularly ads on video streaming sites like Hulu or Crunchyroll)
- Many ads contain tracking cookies that send user behavior back to third parties
The quality of ads has gotten so bad that even Google includes an ad blocker in its Chrome browser now, targeting “substandard ads.” Google’s intentions might be a bit suspect, however, as the company operates a large advertisement wing of its own and likely doesn’t block any Google-sourced ads from AdSense.
Still, thanks to ads, we can enjoy most of the content we watch and read online for free, but ads do have various drawbacks. They can also serve as a vector for computer viruses or third-party hacks.
Before you dive into blocking ads on your favorite websites, we’d like to point out that those websites you’re using often rely on ad revenue to survive. While many websites are now diversifying their revenue streams (often because of increased ad blocker usage), ad revenue is still a major source of income for many websites. The use of ad blockers resulted in an estimated loss of $15.8 billion for websites in recent years.
If you like the services you receive from certain websites that you trust, we suggest you whitelist those sites in your ad blocker’s settings. Whitelisting is the opposite of blacklisting. Instead of telling your ad blocker to block certain sites, you’re telling it that the list of sites are ones you don’t want to block.
Whitelisting is a good way to help guarantee the sites you like and trust continue to get the ad revenue they need. Even if you never click on the advertisements, many sites get some revenue by page views, making it still beneficial for those websites if you to allow their ads to show.
Google’s ad blocker purge
In early summer 2018, Google purged dozens of ad blockers from its Chrome Store. The reason? Many of those ad blockers were themselves malicious, feeding user data into botnets and allowing whoever was on the other end to gain control. A few very popular, widely-downloaded, and highly-praised ad blockers were caught up in the mix as well, including SuperBlock and AdRemover for Google Chrome.
Over 20 million users installed the suspect ad blockers, many of which simply cloned legitimate code from other, official ad blockers. Some used very similar names as well.
If you downloaded one of the malicious ad blockers, Google’s purge would have disabled the ad blocker from working on your Chrome browser.
As far as we can tell, the only ad blockers left on the Google Chrome Store are fully legitimate. All of the Chrome plugin options that are currently on our list passed Google’s vetting process. However, be sure to double check the history and safety of any developer whose program you choose to install as a plugin on your browser.